.errormain{
    width: 780px;
    height: 800px;
    margin: 10px auto;
}
.previouspage{
    width: 170px;
    height: 45px;
    background: #F08200;
    border-radius: 5px;
    text-align: center;
    font-size: 18px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #FFFFFF;
    line-height: 45px;
    margin-left: 160px;
    float: left;
    cursor: pointer;
}
.previouspage2{
    width: 170px;
    height: 45px;
    background: #498E3D;
    border-radius: 5px;
    text-align: center;
    font-size: 18px;
    font-family: Microsoft YaHei;
    font-weight: 400;
    color: #FFFFFF;
    line-height: 45px;
    margin-left: 100px;
    float: left;
    cursor: pointer;
}